Chapter 7 - Earth and the Terrestrial Worlds
... the puzzle-like fit of the continents. Mantle material erupts where the seafloor spreads, causing plates to slowly drift across the globe. ...
... the puzzle-like fit of the continents. Mantle material erupts where the seafloor spreads, causing plates to slowly drift across the globe. ...
1 Midterm Exam I September 26, 2:10 HW714
... the same granitic basement. The transition to basalt marks the edge of the continent and divides ocean floors into two major provinces, The submerged outer edge of a continent is called the continental margin. The deepdeep-sea floor beyond the continental margin is called the ocean basin • Features ...
... the same granitic basement. The transition to basalt marks the edge of the continent and divides ocean floors into two major provinces, The submerged outer edge of a continent is called the continental margin. The deepdeep-sea floor beyond the continental margin is called the ocean basin • Features ...
Earth Science Chapter 20 Name Worksheet 1 Block Match the
... 25. Individual volcanic mountains on the ocean floor are called plates ...
... 25. Individual volcanic mountains on the ocean floor are called plates ...
Layers of the Earth PPT - Coventry Local Schools
... B. Crust – thinnest, outermost layer - Made of oxygen, silicon, and aluminum 1. Oceanic – more dense than continental crust 2. Continental – thicker than oceanic crust C. Mantle – middle layer (thicker than crust) - Has more magnesium, so it is more dense than crust D. Core – inner layer (most dense ...
... B. Crust – thinnest, outermost layer - Made of oxygen, silicon, and aluminum 1. Oceanic – more dense than continental crust 2. Continental – thicker than oceanic crust C. Mantle – middle layer (thicker than crust) - Has more magnesium, so it is more dense than crust D. Core – inner layer (most dense ...
inner core
... Iseismic and other geophysical evidence indicates that the outer core is so hot that the metals are in a liquid ...
... Iseismic and other geophysical evidence indicates that the outer core is so hot that the metals are in a liquid ...
stressed out vocab answer key
... up of hot, semisolid rock, and is located directly below the crust. Core: made up of two layers, the inner and outer core. The inner core is an extremely hot solid sphere of iron and nickel at the center of the earth. The outer core is the only liquid layer of the earth; a sea of mostly iron and nic ...
... up of hot, semisolid rock, and is located directly below the crust. Core: made up of two layers, the inner and outer core. The inner core is an extremely hot solid sphere of iron and nickel at the center of the earth. The outer core is the only liquid layer of the earth; a sea of mostly iron and nic ...
Optional GEOL 103 Writing Assignment KEY
... high (due to rocks or to glacial ice), the mantle is depressed, but it can “spring back” slowly as the load is removed by erosion or ice melting. The continental crust is thus thicker than oceanic crust because of its lower density. Mountains can have deep roots, and can also stick up into the air d ...
... high (due to rocks or to glacial ice), the mantle is depressed, but it can “spring back” slowly as the load is removed by erosion or ice melting. The continental crust is thus thicker than oceanic crust because of its lower density. Mountains can have deep roots, and can also stick up into the air d ...
Earth as a System
... The upper part of the mantle is _______________ and _________________________ The lithosphere is very narrow and is __________and ____________. It ______________ on the asthenosphere. It is less ______________________. B. Asthenosphere Below the lithosphere is a less _________________layer called th ...
... The upper part of the mantle is _______________ and _________________________ The lithosphere is very narrow and is __________and ____________. It ______________ on the asthenosphere. It is less ______________________. B. Asthenosphere Below the lithosphere is a less _________________layer called th ...
When the Earth Moves: Sea Floor Spreading and Plate Tectonics
... plate tectonics describes the surface of Earth as being divided into huge plates whose slow movements carry the continents on a slow drift around the globe. Where the plates come in contact with one another, they may cause catastrophic events, such as volcanic eruptions and earthquakes, which in tur ...
... plate tectonics describes the surface of Earth as being divided into huge plates whose slow movements carry the continents on a slow drift around the globe. Where the plates come in contact with one another, they may cause catastrophic events, such as volcanic eruptions and earthquakes, which in tur ...
Dynamic Earth Assessment Test Results
... 16. Which of the following geologic events can occur at a transform boundary? a. Earthquake b. Mountain formation c. Volcanic eruption d. Rift formation You answered correctly! 17. What is happening at the subduction zone of the Juan de Fuca and North American Plates? a. Plates are sliding past each ...
... 16. Which of the following geologic events can occur at a transform boundary? a. Earthquake b. Mountain formation c. Volcanic eruption d. Rift formation You answered correctly! 17. What is happening at the subduction zone of the Juan de Fuca and North American Plates? a. Plates are sliding past each ...
UK earthquake - Snapshot Science
... Should we be worried about earthquakes in the UK? © Snapshot Science, 2010 ...
... Should we be worried about earthquakes in the UK? © Snapshot Science, 2010 ...
Bell Ringer Answers 1-31-11
... ways to make new minerals Because most rocks contain several types of minerals. Nonfoliated; because it would have been changed by heat of lava flows and not by high pressure. ...
... ways to make new minerals Because most rocks contain several types of minerals. Nonfoliated; because it would have been changed by heat of lava flows and not by high pressure. ...
How does the Earth`s crust move?
... incredibly large amounts of active volcanoes. • Most of the active volcanoes on Earth are located here! ...
... incredibly large amounts of active volcanoes. • Most of the active volcanoes on Earth are located here! ...
Hawaii Crustal Plate Lab
... The idea behind plate tectonics is that the crustal plates are moving with respect to one another over geologic time. The rates of movement of crustal plates can be determined by using data from the plate margins along the mid-ocean ridges, or at regions known as “HOTSPOTS” where the distance and ag ...
... The idea behind plate tectonics is that the crustal plates are moving with respect to one another over geologic time. The rates of movement of crustal plates can be determined by using data from the plate margins along the mid-ocean ridges, or at regions known as “HOTSPOTS” where the distance and ag ...
Magnetic Field, Sea-floor Spreading, Deep
... • Sonar is used to map the ocean floor • Most mountains in mid-ocean ridge are under hundreds of meters of water • Iceland is part of a mid-ocean ridge that rises above the surface ...
... • Sonar is used to map the ocean floor • Most mountains in mid-ocean ridge are under hundreds of meters of water • Iceland is part of a mid-ocean ridge that rises above the surface ...
6.4 Notes - Cloudfront.net
... Plate creating the Sierra Nevada Mountains. After the Farallon Plate mostly subducted, the Pacific Plate and the North American Plate then touched creating a transform boundary. The current Juan de Fuca plate is what is left of the Farallon plate. ...
... Plate creating the Sierra Nevada Mountains. After the Farallon Plate mostly subducted, the Pacific Plate and the North American Plate then touched creating a transform boundary. The current Juan de Fuca plate is what is left of the Farallon plate. ...
Erosion - The Agents of Erosion Are Water, Wind, Ice, and Waves
... toward the Earth's crust. Evidence of this is shown at mid-ocean ridges where younger land is pushed up through the ridge, causing the older land to move out and away from the ridge, thus moving the tectonic plates. Gravity is a secondary driving force for the movement of the Earth's tectonic plates ...
... toward the Earth's crust. Evidence of this is shown at mid-ocean ridges where younger land is pushed up through the ridge, causing the older land to move out and away from the ridge, thus moving the tectonic plates. Gravity is a secondary driving force for the movement of the Earth's tectonic plates ...
tectonic plates - geraldinescience
... • The lithosphere forms the thin outer shell of Earth and is broken into several blocks or tectonic plates. • The tectonic plates ride on the asthenoshpere in much the same way that blocks of wood float on water. • Tectonic plates can include continental crust, oceanic crust, or both. • Continents a ...
... • The lithosphere forms the thin outer shell of Earth and is broken into several blocks or tectonic plates. • The tectonic plates ride on the asthenoshpere in much the same way that blocks of wood float on water. • Tectonic plates can include continental crust, oceanic crust, or both. • Continents a ...
The 4 Earth Sciences
... this cloud began to shrink and therefore spin faster. • The inner material was so hot that nuclear fusion began, creating our sun ...
... this cloud began to shrink and therefore spin faster. • The inner material was so hot that nuclear fusion began, creating our sun ...
Plate tectonics
Plate tectonics (from the Late Latin tectonicus, from the Greek: τεκτονικός ""pertaining to building"") is a scientific theory that describes the large-scale motion of Earth's lithosphere. This theoretical model builds on the concept of continental drift which was developed during the first few decades of the 20th century. The geoscientific community accepted the theory after the concepts of seafloor spreading were later developed in the late 1950s and early 1960s.The lithosphere, which is the rigid outermost shell of a planet (on Earth, the crust and upper mantle), is broken up into tectonic plates. On Earth, there are seven or eight major plates (depending on how they are defined) and many minor plates. Where plates meet, their relative motion determines the type of boundary; convergent, divergent, or transform. Earthquakes, volcanic activity, mountain-building, and oceanic trench formation occur along these plate boundaries. The lateral relative movement of the plates typically varies from zero to 100 mm annually.Tectonic plates are composed of oceanic lithosphere and thicker continental lithosphere, each topped by its own kind of crust. Along convergent boundaries, subduction carries plates into the mantle; the material lost is roughly balanced by the formation of new (oceanic) crust along divergent margins by seafloor spreading. In this way, the total surface of the globe remains the same. This prediction of plate tectonics is also referred to as the conveyor belt principle. Earlier theories (that still have some supporters) propose gradual shrinking (contraction) or gradual expansion of the globe.Tectonic plates are able to move because the Earth's lithosphere has greater strength than the underlying asthenosphere. Lateral density variations in the mantle result in convection. Plate movement is thought to be driven by a combination of the motion of the seafloor away from the spreading ridge (due to variations in topography and density of the crust, which result in differences in gravitational forces) and drag, with downward suction, at the subduction zones. Another explanation lies in the different forces generated by the rotation of the globe and the tidal forces of the Sun and Moon. The relative importance of each of these factors and their relationship to each other is unclear, and still the subject of much debate.